Massachusetts Unrestricted Construction Supervisor License Practice Test

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Prepare for the Massachusetts Unrestricted Construction Supervisor License Test. Study with flashcards and multiple-choice questions, each accompanied by hints and explanations. Ace your exam with confidence!

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What is the minimum time exit lights must be illuminated in case of primary power loss?

1 hour
1.5 hours
2 hours
30 minutes

The correct answer is: 1.5 hours

The minimum time that exit lights must be illuminated in the case of primary power loss is established to ensure that occupants can safely evacuate a building during an emergency. In Massachusetts, the requirement for exit lights, commonly referred to as emergency lighting, mandates that these lights be operational for a minimum of 1.5 hours during power outages. This duration allows sufficient time for individuals to find their way to exits, which is particularly critical in situations where visibility may be compromised due to smoke or darkness. The choice of 1.5 hours balances the need for adequate illumination with practicality, ensuring that exit signs remain visible for a reasonable amount of time under emergency conditions. This standard aligns with safety regulations and best practices, emphasizing the importance of providing a clear and safe egress path in the event of an emergency.